MARYLAND FLOW REPORT

Last Updated: January 11, 2026

Maryland's rivers and streams have recently experienced significant fluctuations in streamflow, challenging enthusiasts who track and enjoy these waterways. Across the state, some areas are experiencing flow levels well below normal, while others have seen sharp increases that could raise concerns about flooding potential. For example, Deer Creek near Darlington reported a current streamflow of 244 cubic feet per second (cfs), a considerable rise of 187.4 cfs in the last 24 hours, though it's still -53.59% below what is considered normal for this time of year. The Susquehanna River at Conowingo, a major waterway with implications for both recreation and ecosystems, is flowing at 5,520 cfs, marking a modest 24-hour increase but at -84.22% of its normal flow, indicating a state of diminished water levels that could impact activities and local wildlife.

Additionally, extreme streamflow changes have been noted in several regions, which could have immediate effects on local communities and river-based recreation. The Western Branch at Upper Marlboro saw an incredible surge in streamflow, with an increase of 2,145.99%, now flowing at 420 cfs, well above the norm at 110.59% of typical levels, which could signal potential flooding risks or alter whitewater conditions. In contrast, the North Branch Potomac River at Steyer exhibits a significant boost in flow, up 290.3 cfs, standing at 123.71% of its average, possibly affecting the whitewater trails in the region. Other streams such as Gwynns Falls at Washington Blvd in Baltimore also underwent a dramatic 711.11% increase in the last day, now at 219 cfs, suggesting possible urban waterway impacts. These data points underscore the need for river users and local residents to stay informed on current conditions, as the variability in streamflows can have immediate environmental and recreational implications, including the suitability of conditions for fishing, boating, and the health of aquatic habitats.